diff options
Diffstat (limited to 'Libraries/LibJS/Tests/loops/for-of-basic.js')
-rw-r--r-- | Libraries/LibJS/Tests/loops/for-of-basic.js | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/Libraries/LibJS/Tests/loops/for-of-basic.js b/Libraries/LibJS/Tests/loops/for-of-basic.js deleted file mode 100644 index e08d096c68..0000000000 --- a/Libraries/LibJS/Tests/loops/for-of-basic.js +++ /dev/null @@ -1,100 +0,0 @@ -describe("correct behavior", () => { - test("iterate through array", () => { - const a = []; - for (const num of [1, 2, 3]) { - a.push(num); - } - expect(a).toEqual([1, 2, 3]); - }); - - test("iterate through string", () => { - const a = []; - for (const char of "hello") { - a.push(char); - } - expect(a).toEqual(["h", "e", "l", "l", "o"]); - }); - - test("iterate through string object", () => { - const a = []; - for (const char of new String("hello")) { - a.push(char); - } - expect(a).toEqual(["h", "e", "l", "l", "o"]); - }); - - test("use already-declared variable", () => { - var char; - for (char of "abc"); - expect(char).toBe("c"); - }); - - test("respects custom Symbol.iterator method", () => { - const o = { - [Symbol.iterator]() { - return { - i: 0, - next() { - if (this.i++ == 3) { - return { done: true }; - } - return { value: this.i, done: false }; - }, - }; - }, - }; - - const a = []; - for (const k of o) { - a.push(k); - } - - expect(a).toEqual([1, 2, 3]); - }); - - test("loops through custom iterator if there is an exception thrown part way through", () => { - // This tests against the way custom iterators used to be implemented, where the values - // were all collected at once before the for-of body was executed, instead of getting - // the values one at a time - const o = { - [Symbol.iterator]() { - return { - i: 0, - next() { - if (this.i++ === 3) { - throw new Error(); - } - return { value: this.i }; - }, - }; - }, - }; - - const a = []; - - try { - for (let k of o) { - a.push(k); - } - expect().fail(); - } catch (e) { - expect(a).toEqual([1, 2, 3]); - } - }); -}); - -describe("errors", () => { - test("right hand side is a primitive", () => { - expect(() => { - for (const _ of 123) { - } - }).toThrowWithMessage(TypeError, "123 is not iterable"); - }); - - test("right hand side is an object", () => { - expect(() => { - for (const _ of { foo: 1, bar: 2 }) { - } - }).toThrowWithMessage(TypeError, "[object Object] is not iterable"); - }); -}); |